Moses mcelroy



@einen ,tetes @anni @ffice MOSES MCELROY, 0F SPRINGFIELD, ILLINOIS.Letters Patent No. 68,568, dated September 3, 18,67.

IMPROVEMENT IN HAY AND COTTON-PRESS.

@in ,schwule referer-tu iu t'lgest @niet nteut mit making putt nf lgesame.

TO ALL WHOM IT MAY CONCERN:

Bc 'it known that I, MOSES McELRoY, of Springfield, in the county ofSanganion, and State of Illinois., have invented a new and usefulImprovement in Power-Presses for Compressing Tobacco, Hay, and Cotton,and other analogous uses g, and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being hadto the annexed drawings, making part of this specification, inwhich-Figure l is a side elevation, and

Figure 2 is a plan view.

In both figures certain duplicated parts are in some places omitted, andthe saine letters are employed in the indication of the same parts inboth figures.

Four rods A are placed in the four angles of a rectangle. lhese rods, asshown, are all vertical; but they may bc horizontal. On each rod thereis a screw chased on cach end, those at one end of the rods beingrighthanded screws, and the ones ut the opposite ends` beingleft-handed. The size of the rods and the pitch of the screws must bedetermined according to thecharacter of the work to be done. 'Ihespur-wheels B arc securely and rigidly attached t-o the ends of' theserods A. 'llhey are fitted with helical teeth to receive the threads D ofthe endless screw D, which is turned by the wheel E, having leversattached to and projecting from its periphery, or in any otherconvenient manner. C C are the press-plates, through suitable femalescrews, in which the male screws upon thcrods A pass. By turning theendless screw D in one direction, thc press-plates, traversing theirrespective sets of screws, will be drawn towards one another,compressing any article placed between them. By reversing the revolutionof endless screw, the press-plates, traversing their respective sets ofscrews, will be-separatcd. A ratchet-wheel and pawl may be placed on theshaft of the endless screw to hold it and retain the press-plates inposition when the pressure has becn'applicd. lhejournals of the endlessscrew are formed upon the plates F F, which are set upon shoulders uponthe rods A, which pass through thc plates, and turn freely within therespective holes in thc plates FF, through which they pass.

Y In setting up the rods it must be observed that, as the wheels D aresettwo of them on cach side of the endless screw, those on one side willrevolve from right to left, or in the direction of the hands of a clock,and the ones on the other side will revolve in the reverse'direction;consequently the threads of the screws on one side must bevalso thereverse of those o n the other, so that the plates C C will bemadc totraverse the screws towards or from one another, as may be required.

What I claim as my invention, and desire to secure-by Letters Patent,is-

The hereinb@fore-described arrangement of a double-platen power-press,consisting of thel double screws upon the rods A, the' double endlessscrews D D', spurs B, platens C C, and plates F F, forming bearings forthe endless screw D, supported by shoulders upon the rods'A, which passthrough them, substantially as described, I

In testimony whereot'I have signed my name to this specification in thepresence of two subscribing witnesses` MOSES McELROY.l

Witnesses:

A. C.' Morrnr, HENRY Buur.

